The steadys_weapons.zip file you have requested: Shadow of Chernobyl / Mods / Weapons / STEADY_X_SHOT'S REALISTIC WEAPONS PACK - 227.58kb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R. Shadow of Chernobyl and upload any files you want to share or are missing. This is the only information we could locate:
This mod adds realistic ballistics to all the weapons in the game. This makes headshots more deadly, and it'll only take a few to the chest to kill.